Error importing Custom Properties (World Map Lat/long) - is this a 2020.2 issue?

I get the following error when I try to map the Lat/Long values to the World Map Lat/Long custom properties while importing:

I have no problem to map them to the normal Lat/Long custom properties and I don't recall having this issue with 2019.4

Anyone has an idea if this is 2020.2 related? Or am I doing something wrong?

Thanks much, John